• Question: Which planet could we live on if we couldn't live on the earth anymore?

    Asked by lollipoplover to Akram, David, Gill, Jack, laurenceharwood on 20 Mar 2012. This question was also asked by pinkshoe.
    • Photo: Jack Snape

      Jack Snape answered on 20 Mar 2012:

      There is a hypothetical idea for how to change an uninhabited planet so we could live on it. It’s called terraforming


      It basically involves using plants and bacteria to help change an atmosphere to be able to protect humans from harmful radiation from the Sun.

      Some people think we could do this on either Mars, Venus, the Moon or Europa (one of Jupiter’s moons) but there are lots of practical difficulties… who knows in the future though 😉

      The alternative is to travel for thousands of years to reach a planet near another star that already has a nice atmosphere – but we would need to find a suitable one first!


    • Photo: Gill Menzies

      Gill Menzies answered on 21 Mar 2012:

      The earth’s atmosphere has a lot of things that are perfect for us – perfect temperature, perfect gas concentrations, perfect humidity, perfect food sources ….. another Earth is a tall order. At the moment an average European is living as if we had 3 earths while the average north American lives as if we had 5 earths. So, there is still a lot of work to do on this earth before we abandon for other planets …… 🙂

    • Photo: Akram Alomainy

      Akram Alomainy answered on 21 Mar 2012:

      Living as we know it today exists and balances because of what we know about Earth, its environment and also its atmosphere … However, scientists are still looking for alternatives and who knows there could be one!! There are talks about the Earth getting crowded but the thing is it is not we are only talking about habitable locations … I would think why not make the inhabitable habitable and try to make the best of it 😉

      Personally, I am not ready yet to leave Earth although I wouldn’t mind a holiday in Mars or any other planet 😉

    • Photo: Laurence Harwood

      Laurence Harwood answered on 21 Mar 2012:

      the planet would have to be close enough for us to reach it in a relatively short period of time and be sufficiently like Earth so we could exist on it with lots of protection. Mars might fill the bill but it would need us to be in a very desperate situation on Earth to make it worthwhile trying. It would be far easier to remain on Earth and try to fix things here or, better, not mess things up in the first place as we seem to be doing at the moment.